const https = require('https');

const { formatTime } = require('./util')

const SQLHelper = require('./SQLHelper')
//雪花算法生成id
const snowflake = require('./snowflake');

const multer  = require('multer')
const storage = multer.diskStorage({
  destination: './uploads',
  filename: function (req, file, cb) {
    ///获取图片类型
      let fileType = file.originalname.split('.')
      fileType = fileType[fileType.length - 1]
      cb(null, snowflake() + '.' + fileType)
  }
})
  const upload = multer({ storage: storage })


module.exports = function(app){
  ///登录拦截中间件
  function loginRouter(req,res,next){
    if(req.method == 'OPTIONS'){
      next()
      return;
    }
    let token = req.headers.token
    if(token){
      SQLHelper(`select * from session where id = ${token} and state = 1`).then(ret => {
        if(ret.length){
          let session = ret[0]
          ///2H
          if(new Date().getTime() - session.createTime < 2 * 60 * 60 * 1000){
            req.session = {
              userId:session.userId,
              userName:session.userName
            }
            next()
          }else{
            res.status(400).send({errorMsg:'登录超时'})
          }
        }else{
          res.status(400).send({errorMsg:'当前用户未登录'})
        }
      })
    }else{
      res.status(400).send({errorMsg:'缺少token，请先进行登录'})
    }
  }

  ///让初登录以外的所有小程序接口都需要进行先验证登录
  app.use('/admin',loginRouter)

  ///文件上传
  app.post('/upload',upload.single('file'),(req,res) => {
    res.send(req.file)
  })

  //管理后台登录
  app.post('/login', (req, res) => {
      let userName = req.body.userName
      let passWord = req.body.passWord 
      if(userName && passWord){
        SQLHelper(`
            select * from user where userName = '${userName}'
        `).then(users => {
            if(users.length){///正常登陆
              let user = users[0]
              if(passWord == user.passWord){
                let token = snowflake()
                //缓存到token到session表    
                SQLHelper(`
                INSERT INTO session(id,userId,userName,inTime,createTime,platform)
                VALUES(${token},'${user._id}','${user.nickName}','${formatTime(new Date())}',${new Date().getTime()},'admin')
                `).then(ret => {
                    res.send({
                      nickName:user.nickName,
                      token,
                      avatarUrl:user.photo,
                      _id:user._id
                    })
                  })
              }else{
                res.send({errorMsg:'密码错误'})
              }
            }else{
              res.send({errorMsg:'当前用户不存在'})
            }
        })
      }else{
        res.send({errorMsg:'用户名和密码不能为空'})
      }
  })

  ///退出登录
  app.get('/admin/logout',(req,res) => {
      SQLHelper(`
          update session set outTime = '${formatTime(new Date())}',state = 0 where id = '${req.headers.token}'`).then(ret => {
          res.send({mag:'退出登录成功'})
      })
  })

  ///修改密码
  app.post('/admin/changePassWord',(req,res) => {
    let userId = req.session.userId
    let passWord = req.body.passWord
    let newPassWord = req.body.newPassWord
    if(passWord && newPassWord){
      ///查询用户
      SQLHelper(`select passWord from user where _id = ${userId}`).then(users => {
        let user = users[0]
        ///比对原密码
        if(user.passWord == passWord){
          //修改密码
          SQLHelper(`update user set passWord = '${newPassWord}' where _id = ${userId}`).then(ret => {
            res.send({msg:'修改密码成功'})
          })
        }else{
          res.send({errorMsg:'原密码错误'})
        }
      })
    }else{
      res.send({errorMsg:'原密码和新密码不能为空'})
    }
  })

  ///分页获取首页项目列表
  ///PageSize 默认为10
  ///PageNum 当前页 默认1
  ///type 类型 非必填 banner,轮播图 category,分类 recommend,为你推荐 不填搜索全部
  app.get('/admin/index',(req,res) => {
    let pageSize = req.query.pageSize || 10
    let pageNum = req.query.pageNum || 1
    let offset = (pageNum - 1) * pageSize
    let title = req.query.title
    let type = req.query.type
    let whereSql = 'from index_region where state = 1'
    ///按类型查询
    if(type) whereSql += ` and type = '${type}'`
    ///按标题关键字搜索
    if(title) whereSql += ` and title like "%${title}%"`
    SQLHelper(`
    select count(*) as total ${whereSql};
    select * ${whereSql} 
    limit ${pageSize} offset ${offset}
    `).then(ret => {
      res.send({
        total:ret[0][0].total,
        rows:ret[1]
      })
    })
  })

  
  ///新增首页项目
  ///img 图片地址 必填
  ///url 连接地址 非必填
  ///title 标题 轮播图不填，其他必填
  ///status 是否启用 非必填 1 启用，0 停用
  ///type 类型 非必填 banner(默认),轮播图 category,分类 recommend,为你推荐
  app.post('/admin/index',(req,res) => {
    let img = req.body.img,url = req.body.url,status = req.body.status
    let type = req.body.type || 'banner',title = req.body.title
    if(type != 'banner' && !title){
      res.send({errorMsg:'标题不能为空'})
      return
    }
    if(status != 1) status = 0 //默认启用
    // if(status) status = 1
    if(img){
      let createTime = new Date().getTime()
      SQLHelper(`
      INSERT INTO index_region(title,img,url,status,state,createTime,unitId,type)
      VALUES('${title}','${img}','${url}','${status}',1,${createTime},'juzao','${type}')
      `).then(ret => {
          // res.send(ret)
          let _id = ret.insertId
          res.send(ret.insertId ? {_id:ret.insertId} : {errorMsg:'新增数据失败'})
        })  
    }else{
      res.send({errorMsg:'传入参数错误'})
    }
  })

  //修改首页项目
  //indexId 主码：_id 必填
  app.put('/admin/index',(req,res) => {
    if(req.body.indexId){
      //需要修改的项
      let updateTime = new Date().getTime()
      let updateKey = ['img','url','title','status']
      let updateValues = [`updateTime=${updateTime}`]
      for(let i = 0;i < updateKey.length;i++){
          let key = updateKey[i],value = req.body[key]
          if(value !== undefined) updateValues.push(`${key}='${value}'`)///判断哪些需要修改
      }
      SQLHelper(`UPDATE index_region set ${updateValues.join(',')} WHERE _id = ${req.body.indexId}`).then(ret => {
          res.send(ret)
        })  
    }else{
      res.send({errorMsg:'传入参数错误'})
    }
  })

  ///删除地址 逻辑删除
  //indexId 数据库中主码：_id 必填
  app.delete('/admin/index',(req,res) => {
    let indexId = req.query.indexId
    if(indexId){ 
        SQLHelper(`
        UPDATE index_region
        set state = 0
        WHERE _id = ${indexId}
        `).then(ret => {
          res.send(ret) 
          })  
    }else{
      res.send({errorMsg:'传入参数错误'})
    }
  })

  ///品牌

  ///分页获取品牌项目列表
  ///PageSize 默认为10
  ///PageNum 当前页 默认1
  app.get('/admin/productlist',(req,res) => {
    let pageSize = req.query.pageSize || 10
    let pageNum = req.query.pageNum || 1
    let offset = (pageNum - 1) * pageSize
    let title = req.query.title
    let type = req.query.type
    let whereSql = 'from brand where state = 1'
    ///按类型查询
    if(type) whereSql += ` and type = '${type}'`
    ///按标题关键字搜索
    if(title) whereSql += ` and title like "%${title}%"`
    SQLHelper(`
    select count(*) as total ${whereSql};
    select * ${whereSql} 
    limit ${pageSize} offset ${offset}
    `).then(ret => {
      res.send({
        total:ret[0][0].total,
        rows:ret[1]
      })
    })
  })

  ///新增首页项目
  ///img 品牌logo 非必填
  ///name 品牌名称 必填
  app.post('/admin/productlist',(req,res) => {
    let img = req.body.img
    let name = req.body.name
    if(!name){
      res.send({errorMsg:'品牌名称不能为空'})
      return
    }
    if(img){
      let createTime = new Date().getTime()
      SQLHelper(`
      INSERT INTO brand(name,img)
      VALUES('${name}','${img}')
      `).then(ret => {
          // res.send(ret)
          let _id = ret.insertId
          res.send(ret.insertId ? {_id:ret.insertId} : {errorMsg:'新增数据失败'})
        })  
    }else{
      res.send({errorMsg:'传入参数错误'})
    }
  })

  //修改品牌管理项目
  app.put('/admin/productlist',(req,res) => {
    if(req.body.indexId){
      //需要修改的项
      let updateTime = new Date().getTime()
      let updateKey = ['img','name']
      let updateValues = [`updateTime=${updateTime}`]
      for(let i = 0;i < updateKey.length;i++){
          let key = updateKey[i],value = req.body[key]
          if(value !== undefined) updateValues.push(`${key}='${value}'`)///判断哪些需要修改
      }
      SQLHelper(`UPDATE brand set ${updateValues.join(',')} WHERE _id = ${req.body.indexId}`).then(ret => {
          res.send(ret)
        })  
    }else{
      res.send({errorMsg:'传入参数错误'})
    }
  })

  ///删除地址 逻辑删除
  //indexId 数据库中主码：_id 必填
  app.delete('/admin/productlist',(req,res) => {
    let indexId = req.query.indexId
    if(indexId){ 
        SQLHelper(`
        UPDATE brand
        set state = 0
        WHERE _id = ${indexId}
        `).then(ret => {
          res.send(ret) 
          })  
    }else{
      res.send({errorMsg:'传入参数错误'})
    }
  })

  
///商品管理

///分页获取商品管理项目列表
  ///PageSize 默认为10
  ///PageNum 当前页 默认1
  app.get('/admin/product',(req,res) => {
    let pageSize = req.query.pageSize || 10
    let pageNum = req.query.pageNum || 1
    let offset = (pageNum - 1) * pageSize
    let name = req.query.name
    let whereSql = 'from product where state = 1'
    ///按标题关键字搜索
    if(name) whereSql += ` and name like "%${name}%"`
    SQLHelper(`
    select count(*) as total ${whereSql};
    select * ${whereSql} 
    limit ${pageSize} offset ${offset}
    `).then(ret => {
      res.send({
        total:ret[0][0].total,
        rows:ret[1]
      })
    })
  })
  ///新增首页项目
  app.post('/admin/product',(req,res) => {
    let imgs = req.body.imgs,sales = req.body.sales,status = req.body.status
    let name = req.body.name,brandId = req.body.brandId
    if(name){
      res.send({errorMsg:'标题不能为空'})
      return
    }
    if(imgs){
      let createTime = new Date().getTime()
      SQLHelper(`
      INSERT INTO product(name,imgs,status,brandId,sales,createTime,state)
      VALUES('${name}','${imgs}','${status}','${brandId}','${sales}','${createTime}',1)
      `).then(ret => {
          res.send(ret.insertId ? {_id:ret.insertId} : {errorMsg:'新增数据失败'})
        })  
    }else{
      res.send({errorMsg:'传入参数错误'})
    }
  })

  //修改商品管理项目
  app.put('/admin/product',(req,res) => {
    if(req.body.indexId){
      //需要修改的项
      let updateTime = new Date().getTime()
      let updateKey = ['name','brandId','imgs','sales','status']
      let updateValues = [`updateTime=${updateTime}`]
      for(let i = 0;i < updateKey.length;i++){
          let key = updateKey[i],value = req.body[key]
          if(value !== undefined) updateValues.push(`${key}='${value}'`)///判断哪些需要修改
      }
      SQLHelper(`UPDATE product set ${updateValues.join(',')} WHERE _id = ${req.body.indexId}`).then(ret => {
          res.send(ret)
        })  
    }else{
      res.send({errorMsg:'传入参数错误'})
    }
  })

  ///删除地址 逻辑删除
  //indexId 数据库中主码：_id 必填
  app.delete('/admin/product',(req,res) => {
    let indexId = req.query.indexId
    if(indexId){ 
        SQLHelper(`
        UPDATE product
        set state = 0
        WHERE _id = ${indexId}
        `).then(ret => {
          res.send(ret) 
          })  
    }else{
      res.send({errorMsg:'传入参数错误'})
    }
  })

  ///新闻
  //分页获取新闻项目列表
  //pageSize 每页大小 默认10
  //pageNum 当前页 默认1
  app.get('/admin/news', (req, res) => {
    let pageSize = req.query.pageSize || 10
    let pageNum = req.query.pageNum || 1
    let offset = (pageNum - 1) * pageSize
    let title = req.query.title
    let whereSql = 'from article where state = 1'
    ///按标题关键字搜索
    if (title) whereSql += ` and title like "%${title}%"`
    SQLHelper(`
    select count(*) as total ${whereSql};
    select * ${whereSql} 
    limit ${pageSize} offset ${offset}
    `).then(ret => {
      res.send({
        total: ret[0][0].total,
        rows: ret[1]
      })
    })
  })


  //新增新闻项目
  //img 图片地址 必填
  //title 标题
  //digest 摘要
  //time 时间
  //hot 热点
  //status 是否启用 非必填 1：启用 ； 0：停用
  app.post('/admin/news', (req, res) => {
    let img = req.body.img, title = req.body.title, digest = req.body.digest
    let time = req.body.time, hot = req.body.hot,status = req.body.status
    if (status != 1) status = 0 //默认启用
    if (img) {
      let createTime = new Date().getTime()
      SQLHelper(`
    INSERT INTO article(title,img,digest,time,hot,status,state,createTime,unitId)
    VALUES('${title}','${img}','${digest}','${time}','${hot}','${status}',1,${createTime},'juzao')
    `).then(ret => {
        res.send(ret.insertId ? { _id: ret.insertId } : { errorMsg: '新增数据失败' })
      })
    } else {
      res.send({ errorMsg: '传入参数错误' })
    }
  })


  //修改新闻项目
  //indexId 主码_id 必填
  app.put('/admin/news', (req, res) => {
    if (req.body.indexId) {
      let updateTime = new Date().getTime()
      let updateKey = ['img', 'digest', 'title','time','hot','status']
      let updateValues = [`updateTime=${updateTime}`]
      for (let i = 0; i < updateKey.length; i++) {
        let key = updateKey[i], value = req.body[key]
        if (value !== undefined) updateValues.push(`${key}='${value}'`)///判断哪些需要修改
      }
      SQLHelper(`UPDATE article set ${updateValues.join(',')} WHERE _id = ${req.body.indexId}`).then(ret => {
        res.send(ret)
      })
    } else {
      res.send({ errorMsg: '传入参数错误' })
    }
  })


  //删除首页项目
  //indexId 用户ID 必填
  app.delete('/admin/news', (req, res) => {
    let indexId = req.query.indexId
    if (indexId) {
      SQLHelper(`
      UPDATE article
      set state = 0
      WHERE _id = ${indexId}
      `).then(ret => {
        res.send(ret)
      })
    } else {
      res.send({ errorMsg: '传入参数错误' })
    }
  })

  
  ///单品管理
  //分页获取单品项目列表
  //pageSize 每页大小 默认10
  //pageNum 当前页 默认1
  app.get('/admin/singleproduct', (req, res) => {
    let pageSize = req.query.pageSize || 10
    let pageNum = req.query.pageNum || 1
    let offset = (pageNum - 1) * pageSize
    let skuId = req.query.skuId
    let whereSql = 'from sku where state = 1'
    ///按标题关键字搜索
    if (skuId) whereSql += ` and skuId like "%${skuId}%"`
    SQLHelper(`
    select count(*) as total ${whereSql};
    select * ${whereSql} 
    limit ${pageSize} offset ${offset}
    `).then(ret => {
      res.send({
        total: ret[0][0].total,
        rows: ret[1]
      })
    })
  })


  //新增单品项目
  //skuId sku编码
  //salePrice 售价
  //originalPrice 原价
  //productName 商品名称
  //imgs 图片
  //props 属性
  //skuSpecification 直连供应商
  app.post('/admin/singleproduct', (req, res) => {
    let skuId = req.body.skuId,salePrice = req.body.salePrice, originalPrice = req.body.originalPrice
    let productName = req.body.productName,imgs = req.body.imgs, props = req.body.props
    if (imgs) {
      let createTime = new Date().getTime()
      SQLHelper(`
    INSERT INTO sku(skuId,salePrice,originalPrice,productName,imgs,props,state,createTime,unitId)
    VALUES('${skuId}','${salePrice}','${originalPrice}','${productName}','${imgs}','${props}',1,${createTime},'juzao')
    `).then(ret => {
        res.send(ret.insertId ? { _id: ret.insertId } : { errorMsg: '新增数据失败' })
      })
    } else {
      res.send({ errorMsg: '传入参数错误' })
    }
  })


  //修改单品项目
  //indexId 主码_id 必填
  app.put('/admin/singleproduct', (req, res) => {
    if (req.body.indexId) {
      let updateTime = new Date().getTime()
      let updateKey = ['skuId','salePrice','originalPrice', 'productName','imgs', 'props']
      let updateValues = [`updateTime=${updateTime}`]
      for (let i = 0; i < updateKey.length; i++) {
        let key = updateKey[i], value = req.body[key]
        if (value !== undefined) updateValues.push(`${key}='${value}'`)///判断哪些需要修改
      }
      SQLHelper(`UPDATE sku set ${updateValues.join(',')} WHERE _id = ${req.body.indexId}`).then(ret => {
        res.send(ret)
      })
    } else {
      res.send({ errorMsg: '传入参数错误' })
    }
  })


  //删除单品
  //indexId 用户ID 必填
  app.delete('/admin/singleproduct', (req, res) => {
    let indexId = req.query.indexId
    if (indexId) {
      SQLHelper(`
      UPDATE sku
      set state = 0
      WHERE _id = ${indexId}
      `).then(ret => {
        res.send(ret)
      })
    } else {
      res.send({ errorMsg: '传入参数错误' })
    }
  })
}

